


40A LED Light Bar Wiring Harness – 12V Kit
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
40A LED Light Bar Wiring Harness – 12V KitUpgrade your LED light bar setup with this 40A Wiring Harness Kit. Designed to handle up to 300W, it includes essential components for a reliable installation. Specifications Feature Details Wattage Capacity Up to 300W Switch Type 12V 3PIN illuminated on off Relay 12V 40A Fuse 30A blade fuse Includes a relay module box, wiring harness with adapters, and an LED light bar on off rocker switch.
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4.7 ★★★★★
Based on 993 reviews
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Product Reviews
★★★★★ 5
Solid choice for fuse holder
Size: 300A Fuse Holder
It’s awesome, solid connections for running 0 gauge wire. No issues after using for months! Might upgrade to using 0 gauge wire ferrules to use with this but for now everything is working well.
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Reviewed in the United States on January 14, 2026
★★★★★ 5
Would buy again
Size: 300A Fuse Holder
Works as described
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
I can wire my 0gage wre finally
Size: 300A Fuse Holder
The speed of service and delivery fused at different Amps voltage to purchase appearance is always a great addition and skar audio is always a head of the game I love skar audio I have been running their RP series amps I have all of them except the 4500.1 I bought this for my 07 Wolfsburg jetta with a 15 dual 2ohm down to 1ohm with the RP 3500.1 and it slumps and hits so low the skar box foe my single 15evl series..is tuned to 30htz..n when it hits that level and lower man u know it ..o call it the 23htz (23hurter)..explosive always excellent quality and functionality thanks 😊
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Reviewed in the United States on January 28, 2025
★★★★★ 5
Top notch
Size: 300A Fuse Holder
Very good quality
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Reviewed in the United States on January 8, 2026
★★★★★ 5
It’s good
Size: 300A Fuse Holder
It does it’s job.
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Reviewed in the United States on January 18, 2026